There are a lot of web services that can't use if not put personal information.
However we hasn't method to judge whether that service (site) is safe or not, right?
As a result, there is it.
Have you seen a site that the URL of that page begins not “http://” but “
https://”?
“
s” that is added is an initial of "Secure”, and it has “safe” meaning.
These sites are safe because there use the system called “
SSL”.
SSL is a system that
encode the data when exchanges the data on the Internet.
By do that,
it prevent furtive glance the data on the occasion of exchanges by a third party.
Of course you should be careful when you put personal information at a site that SSL isn't given .
▲Let's look at URL of the site to confirm whether that is given “SSL” or not.
And it will be good to read “
Security Policy” in a site.
It is specified there that about how use user's personal information and how protecting it.
If you worry, you should read it before you use a site.